Modeling and optimization of dual-cylinder image current detector in electrostatic ion beam trap for mass spectrometry

In this paper, dual-cylinder image current detector is introduced and simulated using a numerical electrostatic model in the context of electrostatic ion beam trap (EIBT). Being illuminated by the simulation results, the principle of optimizing this new-type detector is proposed, and the configuration of the detector is modified further to improve the signal waveform. The differential current acquired by an optimized dual-cone detector is strengthened more than ten times than that of single-cylinder detector used in the experiment, which is considerable in the process of signal pick-up and the process of signal analysis in mass spectrometry. The simulation results could be used to devise and optimize the image current detector thus to improve the detected signal, and indicate signal analysis (such as FFT) of EIBT for mass spectrometry.

Graphical abstractThis detector acquires the differential current with strengthened intensity, and the configuration is modified further to improve the waveform of the signal.Figure optionsDownload full-size imageDownload as PowerPoint slide